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28 March 2022
Article (Scientific journals)
Sounds and associated morphology of Hypostomus species from South-East Brazil
Raick, Xavier  ; Koussa, Anaïs  ; Zawadzki, Cláudio Henrique et al.
2022 • In Journal of Zoology
Peer Reviewed verified by ORBi


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Keywords :
bioacoustics; catfish; Loricariidae; pectoral girdle; pectoral spine; Siluriformes; sound production; stridulation
Abstract :
[en] Hypostomus is the most diverse genus within Loricariidae. These catfish species exhibit a very conservative morphology with relatively few external characteristics that differ between different species. In consequence, there is a challenge to understand the distinction of species of this genus. This study aims to describe the sounds produced by ten species of Hypostomus from Araguari River and Paraopeba River (Minas Gerais, Brazil), to examine whether acoustic features could be used to distinguish between the species, and to understand the corresponding sound production mechanisms. The fish were recorded making sounds by holding them in hand underwater, in a glass tank on the river shore next to where they had been caught. All ten species produced sounds, and no effect of body size on acoustic features was observed. Furthermore, the species could not be distinguished using acoustic features. Likewise, all the studied species exhibited similar bony ridges on the dorsal processes of the pectoral spine. Since the sounds produced by the fish do not seem to exhibit interspecific specificity, they do not appear to have a role in behaviours requiring conspecific recognition, such as reproduction. Sound production may have an alarm, distress, or acoustic aposematism function warning predators of the presence of pectoral spines, which have an anti-predatory function in this clade.
Research center :
FOCUS - Freshwater and OCeanic science Unit of reSearch - ULiège
Disciplines :
Author, co-author :
Raick, Xavier  ;  Université de Liège - ULiège > Freshwater and OCeanic science Unit of reSearch (FOCUS)
Koussa, Anaïs ;  Université de Liège - ULiège
Zawadzki, Cláudio Henrique
Kurchevski, Gregório
Godinho, Alexandre Lima
Parmentier, Eric  ;  Université de Liège - ULiège > Freshwater and OCeanic science Unit of reSearch (FOCUS)
Language :
Title :
Sounds and associated morphology of Hypostomus species from South-East Brazil
Publication date :
04 April 2022
Journal title :
Journal of Zoology
Publisher :
Wiley, Oxford, United Kingdom
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
King Leopold III Fund for Nature Exploration and Conservation
Freshwater and Oceanic Science Unit of Research
F.R.S.-FNRS - Fonds de la Recherche Scientifique


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